By making a cash donation to The Salvation Army, you are able to claim a charitable deduction of up to 50% of your adjusted gross income in the year you make the gift. If you cannot utilize the entire deduction in that year, deductions may be carried over for an additional five years.
Scientists learn about the layers deep within the Earth's crust by studying how seismic waves travel through the Earth.If there is an earthquake somewhere, seismagraphs in many locations will record it.
A team of scientists has measured the melting point of iron at high precision in a laboratory, and then drew from that result to calculate the temperature at the boundary of Earth's inner and outer core â now estimated at 6,000 C (about 10,800 F). That's as hot as the surface of the sun.The difference in temperature matters, because this explains how the Earth generates its magnetic field. The Earth has a solid inner core surrounded by a liquid outer core, which, in turn, has the solid, but flowing, mantle above it.There needs to be a 2,700-degree F (1,500 C) difference between the inner core and the mantle to spur thermal movements that â along with Earth's spin â create the magnetic field.The previously measured core temperature didn't demonstrate enough of a differential, puzzling researchers for two decades.arth's internal engine is running about 1,000 degrees Celsius (about 1,800 degrees Fahrenheit) hotter than previously measured, providing a better explanation for how the planet generates a magnetic field, a new study has found.